Tube expanding, beading, and cutting tool.



,No. 761,518. PATENTED MAY 31,1904.

'H.G.LYKKBN.

TUBE EXPANDING, READING, AND CUTTING TOOL. APP LIONTION FILED AUG. 19,19 03.

no MODEL.

I m vs/vron A TTOBNEYS aly/bierz UNI TED STATES l Patented May 31, 1904.

PATENT OFFICE.

HENRY e. YKKEN, OF GRAFTonNon H DAKOTA.

TUBE EXPANDING,BEADING, ANDCUTTING TOOL.

SPECIFICATION forming part of Letters Patent N0. 761,518, dated May 31,1904.

Application filed August 19, 1903. serial No. 169,999.- (No model.) I

To all whom it may concern/.-

Be it known that I, HENRY Gr. LYKKEN, a

citizen of the United States,'and a 'r'esidentof Grafton, in the countyof Walsh and State of North Dakota, have invented anew and Im provedTube Expanding, Beading, and Cutting Tool, of whichthe followingis-alfull, j

character indicated which adapts it for convenient and reliable service,facilitates the ex-,

change of parts'to effect the expansion, beading, or cutting offofa'flue-or tube while in place, and afiords a simple practical implement;

at a moderate cost. 1

The invention consists in the novel "constru'ction and combination'ofparts, as is here-l inafter described, and defined in the appendedclaims.

Reference is to be'had to the accompanying drawings, forming a part ofthis specification, Y

in which similar characters of reference indicate corresponding parts nall the figures.

'Figure'l is a sectional side view of the improved .tool appliedas abeadingimplement. 3

.of the arrow w in Fig- 11 verse sectional view substantially on theline roller mounted on the bracket-block in place of the cutter.

Fig. 2 18 a transverse sectional view sub-' stantially on the line 2 2in Fig. 1. v Fig. 3 is an end view of-the device seen in direction Fig-4is a trans- 4 45in Fig. 1. Fig. 5 is a sectional side view of acutter-supporting bracket-block and a rotary cutter thereon; and Fig. 6is a similar view' with Fig. 5,'but showing an expanding- The improvedtool, that is adapted to serve the purpose of a tube-cutter, atube-expander, and a tube-beader, as occasion may require;

v is extremely simple, strong, light, convenient to place and removewhile in use, and adapted 'for service in close proximity to the sidesof effective service, an axial bore (0 extending therethrough, as shown1n Fig. 1.

-ber of cutter-wheels 16, respectively.

Upon one end of the mandrel 10, that may i be somewhat reduced indiameter as compared with the middle portion thereof, a preferablyhexagonalformation 10 is produced, it being. understood that any otherangular peripheral form may be given to this integral portion-of themandrel which may be adaptv ed for engagement therewith ofa suitablewrench, (not shown,) whereby the mandrel 10 ;may be rotated. 5 v 1 Uponthe exterior of the mandrel 10, ad-

'jacent to the angular formation 10, a thread 10 is formed, and uponsaid thread an in teriorly-threaded hub 11'is screwed and adapted foradjustment along the same.

A cupped flange 12 is mounted upon a slightly-reduced peripheral portionof the hub 11, abutting upon a radial shoulder Z), that is produced bythe 'diametric'al reduction of the hub, and said flange is held in placeby the set-screw c, as indicated in Fig.1. In the gular openings d. ofequal size are formed, these apertures being equally spaced apart.

In the openings 0Z three sets of bracketblocks 13, '13, and 13 arefitted, each set of these similar blocks being designed as sup ports forthree beading-rollers. 14E, alike number of expanding-rollers 15, and asimilar num Each of the blocks-13 is transversely recessed in itsupperside, leaving end. walls standing thereon, which walls are oppositelywall of the hollow mandrel 10 three rectan- V I perforated to receivethe journal ends of a beading-roller 14:, said rollers, of the usual orany preferred form, being held to rotate in the recesses of the blocks,as indicated in Figs. 1 and 2. v

A coniform'wedge 17 is preferably formed integral with an elongatedadjusting-screw '17 and is axially coincident therewith, the

smallerend of the wedge joining one end of Y the" screw, as shown inFig. 1. V

The-coniform wedge 17 and adjusting-screw 17 are introduced within thebore a of the blocks are sloped, so as to conform with the taper of theconiform wedge, as shown for one block in Fig. 1.

Upon the end portion of the adjusting-screw 17 which projects exteriorof the mandrel a washer-block 18 is loosely mounted, said block beingadapted to loosely hold in recesses formed in one side face thereof aproper number of bearing-balls e, that project sufficiently to havecontact with the adjacent end of the mandrel.

An adjusting-nut 19 is screwed upon the portion of the screw 17 a thatextends beyond the plain surface of the block 18 and in service hascontact with said surface, so that the "block 18 serves as anantifriction-washer for the nut.

At the opposite end of the mandrel 10, which is somewhat reduced indiameter, a sleeve is mounted and held in place by the set-screw g. Aset of three spring keeper-arms 20 project from one end of the sleeve 20toward the openings (1 and are equally spaced apart, said arms looselyoccupying longitudinal channels formed in the periphery of the mandrel10. I

As shown for one block 13, the spring keeper-arms have bearing contactupon the upper surfaces of said blocks, respectively, thus insuring acontact of the latter with the coniform wedge 17.

In Fig. 5 the bracket-block 13 shown is the counterpart of the block 13(shown in Figs. 1 and 2) and is one of a set of three bracketblockswhich rotatably support three similar cutters 16, that are circular andV-shaped in section, as is usual in this style of tube-cutters, and itwill be seen that the blocks 13 may be readily removed by a longitudinaldisplacement of the keeper-arms 20 and the blocks 13 be introducedwithin the openings 0? for service.

In Fig. 6 is shown one of a set of three expanding-rollers 15,rota'tably supported on a bracket block 13, similar to the bracketbloeks13 13, these expanding-rollers having either a cylindrical form,-asshown, or any other peripheral shape that may be best adapted for theirservice.

In Fig. 1 is represented an application of the improved tool to form abead upon a boilertube, A representing the tube and B the flue sheet,through which the end of the tube or flue is inserted and wherein saidtube end is to be aflixed by use of the improvement.

As shown, the mandrel 10 is introduced within the tube A, the latterbeing in proper position in a perforation in the tube or flue sheet B,the degree of insertion being accurately determined by contact of thetrue edge of the cupped flange 12 upon the exterior surface of the tubeor flue sheet B, anditwill be apparent that'by an adjustment of the hub11 on the threaded body of the mandrel 10 the beading-rollers 14 may beexactly located within the tube A to form a projecting head on said tubeat the inner side of the flue or tube sheet B.

In operation, assuming that the parts of the tool are arranged forforming a bead on the tube A, the workman applies a suitable wrench uponthe nut 19 and rotates it, so as to pull the coniform wedge 17 towardthe outer end of the mandrel, thus causing pressure on the inner ends ofthe bracket-blocks 13. A wrench is now placed upon the angular formation10 and the mandrel 10 is rotated therewith, which will cause thebeading-rollers 14 to indent the inner surface of the tube A. After afew turning movements of the mandrel 10 the wrench is again applied uponthe adjusting-nut 19 and the latter is turned in a proper direction toagain 'pull upon the coniform wedge 17, forcing the rollers 14 againinto contact with the flue or tube A, and thus adapt the subsequentrotation of the mandrel 10 by means of a wrench applied to the angularformation 10 to produce a bead upon the exterior of the tube A incontact with the inner surface of the sheet B.

It will be seen that by employment of the cupped flange 12, held inposition by the adjustable hub-block 11, and the provision of theantifriction-washer 18 the frictional resistance to a turning movementof the implement, thatin ordinary tools of its class is great, may beovercome with ease and the work lightened correspondingly.

After the head is formed the tool may be withdrawn from the tube A byfirst turning the nut 19 in an opposite direction, so as to permit theinsertion of the coniform wedge 17 farther into the bore a of themandrel, which will dispose the bracket-blocks 13 opposite the smallestportion of the wedge and permit the spring-arms 20 to press thebeading-rollers 14 out of the groove they have formed in the tube, andthus release the mandrel for its withdrawal from the tube A. A removalof the beading-rollers 14 may now be effected, as before mentioned, topermit the substitution of the expanding-rollers 15 therefor, which whenin position on the mandrel 10 may be disposed opposite the surface ofthe tube A that is opposite the wall of the circular orifice occupied bythe end of the said tube, this adjustment being readily efleeted byscrewing the hub 11 farther on the mandrel, and thus reducing thedistance of the rollers 15 therefrom.

When the set of expanding-rollers, one of which is shown in Fig. 6, arein position, they may be forced into engagement with the inner surfaceof the tube A by turning the screw 17 so as to draw upon the wedge 17,whereupon a rotation of the mandrel 10 will obviously expand the tube byrolling contact of the rollers 15 therewith.

In case the tool is to be employed for cutting ofl" flues or tubes whilein position within a boiler or the like it is only necessary tosubstitute the bracket-blocks 13 for the bracketblocks 13 or 13 if thelatter occupy the openings d, which will place the cutters 16 inposition for use, the cutters being embedded in the tube near theflue-sheet-B by a longitudinal adjustment of theconiform wedge 17, ashas already been explained for the outward movement of thebeading-rollers and expanding-rollers, the circular cutters operating tocutoff the tube when the mandrel 10 is rotated and the nut 19 turned atintervals to draw upon the coniform wedge 17.

It will be obvious that as there are no projections on the tool whichwill interfere with the side wall of a boiler fire-box or smoke-boxflues or tubes may be set or cut off for removal along the outer rows ofthe same as positioned in the flue-sheets and the improved implement beemployed for such work in a rapid easy manner.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A tool of the character described, consisting of ahollow mandrel having an angular outer end and provided with an externalscrewthread adjacent to said end and with aplurality of radial openings,a coniform wedge in the mandrel and having formed'integrally' therewithand extending from the smaller end thereof, an adjusting-screw whose endprojects through the mandrel, a washer on the projecting end of theadjusting-screw and having its inner face recessed, balls in the saidrecesses, a nut on the adjusting-screw beyond the washer, a plurality oftool-holding bracketblocks in the openings of the mandrel and havingbeveled lower faces, a sleeve mounted on the inner end of the mandreland provided with arms, the free ends of which engage the tool-holdingbracket-blocks, an internallythreaded hub screwing on the mandrel andprovided with a peripheral shoulder, and a cupped flange secured uponthe'hub and abutting against the shoulder thereof, as set forth.

2. A tool of the character described, comprising a hollow mandrel havingan angular outer end and provided with an external screwthread near saidend, and with radial openings, an internally-threaded hub screwing onthe mandre a cupped flange secured to-the hub, a plurality oftool-carrying bracketblocks fitting in the openings of the mandrel I andhaving beveled lower faces, spring-arms secured to the mandrel andhaving their free ends engaging the bracket-blocks, a coniform Wedge inthe mandrel and having an adjusting-screw formed integrally therewith,'the said adjusting-screw projecting through the mandrel, aball-carrying washer loose on the projecting end of the adjusting-screw,and a nut on the end of the adjusting-screw beyond the said washer, asset forth.

3. A tool of the character described, comprising a hollow mandrelprovided with an external screw-thread and with radial openings, ahubscrewing on the mandrel, a cupped flange secured to the hub, toolholding bracketblocks fitting, in the openings of themandrel,

'a sleeve on the inner end of the mandrel and bracket-blocks, a coniformwedge in the man-' I drel and having an adj usting-screw secured to itssmaller end, said screw pro ecting through the mandrel, and a nut on theprojecting end of the screw, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY G. LYKKEN.

Witnesses:

WM. MACKEN IE, NEIL MCMURCHIE.

